Nuisance prevention circuitry, Here’s how it works – Directed Electronics 3901V User Manual

Page 11

The siren will sound and the parking lights will flash for 30 seconds. To

stop Panic Mode at any time, press the unlock button on your factory

transmitter.

Nuisance Prevention Circuitry

Your system has Nuisance Prevention Circuitry

(NPC

). This circuitry

prevents annoying repetitive trigger sequences due to faulty door pin

switches or environmental conditions such as thunder, jackhammers,

airport noise, etc.

Here’s how it works:

The alarm triggers three times. Each time, the same sensor or switch is

triggering the alarm. The three triggers are within 60 minutes of each

other. Your system will interpret this pattern of triggers as false alarms.

After the third trigger, your system ignores, or bypasses, that sensor or

switch (along with any other sensors or switches sharing the same zone)

for 60 minutes.

If the bypassed sensor tries to trigger the system while it is being

bypassed, the 60-minute bypass period will start over. This ensures that

a sensor that is continuously triggering will remain bypassed.

Doors are covered differently: If the alarm is triggered by an open door

nnoottee:: The system can also be programmed so that pressing
the lock button more than once within three and five seconds
will activate an optional accessory. If the unit is programmed
to activate an optional accessory.